12XC30 - Beyma

12XC30

C o a x i a l

KEY FEATURES

• 12” bass loudspeaker and 1” exit compression driver combination

• High power handling: 250 w AES (L.F. unit) and 40 w

AES (H.F. unit)

• Extended and linear frequency response (45-20000 Hz)

• High sensitivity: 98 dB (L.F. unit) and 105 dB (H.F. unit)

• Low weight (neodymium compression driver)

• Bass loudspeaker designed for compact bass-reflex cabinets

GENERAL DESCRIPTION

This 12” coaxial loudspeaker has been designed in order to achieve an excellent compromise between power handling, efficiency and weight. Its low frequency unit features a 2.5” (62.4 mm) aluminium voice coil which handles 250 w AES, while the high frequency unit features a 1.75” (44.4 mm) edgewound aluminium ribbon voice coil which yields a 40 w AES power handling.

The combination of these two drivers give as a result an extended and linear frequency response with low distortion and high efficiency. Moreover, this dual loudspeaker has a relatively low weight (5.2 kg.) that makes easier to fit it with a compact bass-reflex enclosure.

FREQUENCY RESPONSE AND DISTORTION CURVES FREQUENCY RESPONSE OUT OF AXIS

Note: on axis filtered frequency response measured with loudspeaker standing on infinite baffle in anechoic chamber, 1w @ 1m.

PREDICTED LOW FREQUENCY RESPONSE FREQUENCY RESPONSE OF LF & HF UNITS

Note: bass-reflex cabinet, Vb=70 l, fb=45 Hz

Note: on axis frequency response of low and high frequency units,

1w @ 1m.

12XC30

C o a x i a l

DIMENSION DRAWINGS TECHNICAL SPECIFICATIONS

L.F. UNIT

Nominal diameter

Rated impedance

Minimum impedance

Power capacity*

Program Power

Sensitivity

Frequency range

Recom. enclosure vol.

Voice coil diameter

Magnetic assembly weight

BL factor

Moving mass

Voice coil length

Air gap height

X damage

H.F. UNIT

Rated impedance

Minimum impedance

Power capacity

Frequency range

Sensitivity 1w @ 1m

Voice coil diameter

Flux density

BL factor

Dispersion

300 mm. 12 in.

8 ohms.

7.3 ohms.

250 w AES

500 w

98 dB 2.83v @ 1m @ 2p

45-6000 Hz

30 / 100 l 1.06 / 3.53 ft.

3

62.4 mm. 2.5 in.

4.3 kg. 9.46 lb.

12.8 N/A

0.040 kg.

17 mm.

7 mm.

24 mm.

16 ohms.

10.9 ohms.@ 4.5 kHz

40 w AES above 1.5 kHz

0.7 - 20 kHz

105 dB

44.4 mm. 1.75 in.

1.8 T

10.5 N/A

90° conical

THIELE-SMALL PARAMETERS

Resonant frequency, fs

D.C. Voice coil resistance, Re

Mechanical Quality Factor, Qms

Electrical Quality Factor, Qes

Total Quality Factor, Qts

Equivalent Air Volume to Cms, Vas

Mechanical Compliance, Cms

Mechanical Resistance, Rms

Efficiency, hhhhho (%)

Effective Surface Area, Sd (m 2 )

Maximum Displacement, Xmax

Displacement Volume, Vd

Voice Coil Inductance, Le @ 1 kHz

Notes:

*The power capacity is determined according to AES2-1984 (r2003) standard.

Program power is defined as the transducer’s ability to handle normal music program material.

43 Hz

6.3 ohms.

7.40

0.42

0.39

147 l

342 mmmmmm / N

1.5 kg / s

2.7

0.0550 m 2

5 mm

272 cm 3

1.5 mH

MATERIALS

L.F. UNIT

• Basket: Die cast aluminium

• Cone: Paper

• Surround: Plasticised cloth

• Voice coil: Aluminium

• Magnet: Ferrite

H.F. UNIT

• Diaphragm: Polyester

• Voice coil: Edgewound aluminium ribbon

• Voice coil former: Kapton

• Magnet: Neodymium

MOUNTING INFORMATION

Overall diameter

Bolt circle diameter

Baffle cutout diameter:

- Front mount

- Rear mount

Depth

Volume displaced by driver

Net weight

Shipping weight

312 mm. 12.28 in.

294.5 mm. 11.6 in.

277.5 mm. 10.92 in.

277.5 mm. 10.92 in.

168 mm. 6.61 in.

5.5 l. 0.16 ft.

3

5.2 kg. 11.44 lb.

5.9 kg. 12.98 lb.

**T-S parameters are measured after an exercise period using a preconditioning power test.

The measurements are carried out with a velocity-current laser transducer and will reflect the long term parameters (once the loudspeaker has been working for a short period of time).

Polígono Industrial Moncada II · C/. Pont Sec, 1c · 46113 MONCADA - Valencia (Spain)

· Tel. ( 34 ) 96 130 13 75 · Fax ( 34 ) 96 130 15 07 · http://www.beyma.com · E-mail: [email protected] ·